Valve for gauge cocks



' H. w. RYALLS. VALVE FOR GAUGE COCK S. APPLICATION FILED OCT. H, 1920.

Patented July 4, 1922.

INVENTOR.

KWHTEE STATEfi HENRY W. RYALLS, OF THURMOND, WEST VIRGINIA.

VALVE FOR GAUGE COCKS.

Application filed October 11, 1920.

To all to 7mm it-may 0012067 21:

Be it known that I, HENRY 1V. RYALLS, a citizen of the United States, residing at Thurmond, in the county of Fayette and State of est Virginia, have invented certain new and useful Improvements in Valves for Gauge Cocks, of which the following is a specification, reference being had therein to the accompanying drawing.

My invention relates to gauge cooks for steam boilers, and to the type that are pro vided with an automatic seating check valve as well as the hand valve, closing under boiler pressure when the hand valve is removed, which removal may be necessary for repairs or other purposes. If, through faulty construction, injury to parts, or other causes, the check valve fails to seat when the hand valve is removed, there is danger of the workmen being scalded from the escaping steam and hot water from the boiler. The object of my invention is to provide a gauge cock of such construction as will assure the certain and effectual seating of the check valve at all times when the valve should be seated and'which will possess other advantages of construction and operation that will be apprecia-tedby those skilled in the art when they understand my invention as exemplified by the construction shown in the drawings and hereinafter described in detail. My invention consists in the cock having the construction defined by or embraced within the scope of the appended claims.

In the accompanying drawings;

Fig. 1 is a longitudinal section of a gauge cock constructed in accordance with my invention;

Fig. 2 is a perspective view of the hand valve;

Fig. 3 is a perspective view of the check valve.

The gauge cock shown in the drawings to illustrate one embodiment of my invention has a body, 10, provided with a perforation or here from end to end, having intermediate its ends a discharge nozzle, 11, and at one end having external thread, 12, for screwing it into a hole in the boiler, and at the other end a stuffing box, 13, through which passes the valve stem, 14, fitted with a turning handle, 15, on its outer end, and at its inner end acting on the valve, 16, which has at one end a coned face that coacts with a conical seat, 17, situated to control the flow Specification of Letters Patent.

Patented July 4t, 1922.

Serial No. 416,206.

of water and steam from the bore or passage, 18, to the discharge nozzle, 11. At the boiler end of the bore, 18, is a conical valve seat, 19, with which coacts the coned end of the check valve, 20, that consists simply of a solid cylindrical block with one end coned or tapering to fit the valve seat, 19, the check valve, 20, being thus in elfect simply a chunk or block of metal without any parts that are small or shaped so that they are apt to be injured by knocks or blows or affected by the high temperature to which the parts of the cock are exposed. The cylindrical part of the valve, 20, loosely fits a cylindrical enlargement of the body bore or hole, which enlargement extends clear to the inner end of the body and is closed by a ring or bushing, 21, externally threaded, that screws into a thread in the end of said enlargement, said ring or bushing, 21, thus making it impossible for the check valve to fall or get out of the valve body, while allowing through its hole ample passage of water. The ring, or bushing, 21, it will be observed, makes a sturdy substantial stop that will not be broken or injured with the result of permitting the falling out of the check valve. The effect of heat on the bushing, 21, by expanding it, is to assure its tight retention in place. The exterior of the cylindrical part of the valve, 20, has

several longitudinal grooves, 22, that open out upon the conical end, which allow the free passage of water and steam and direct the same in the form of streams that play upon the valve seat, 19, and the exterior of the valve when the valve is off its seat and thus keep the surfaces thereof in a clean condition. Preferably, a light coil spring, 23, is interposed between the bushing, 21, and the check valve, 20, to keep the valve from rattling around when it is under no pressure. The spring, 23, also, by its pressure against the valve, 20, tends to keep the latter from changing the position of its taper end with reference to its seat in a retary direction so that the constant seating of the valve upon its seat in the same position assures conformity of valve and seat from wear and thus assures a water or steam tight joint between valve and seat.

To the valve, 16, is attached a stem, 2 1, that passes loosely through the bore, 18, and has a length to reach the check valve, 20, and hold the latter off its seat, 19, a substantial distance when the valve, 16, is on its seat,

24, which engages a threaded hole in the.

valve, 16, a lock-nut, 26, being provided to securely hold the stem, 24L, at the desired adjustment to maintain the two valves at the proper distance apart. 7

The valve, 16, as usual, has a stem, 27, that loosely fits a cylindrical hole in the main stem, 14, and a pin, 28, passing diametrically through alining holes in the two stems, couples the valve, 16, to the stem, 14,

so that the valve, 16, is positively pulled from its seat and thus it is assured that it will open notwithstanding any tendency of it to stick to its seat, which might be sulficiently great to resist opening by the boiler It will be seen that my gauge cock is strong and substantial of construction, access to the interior may be easily and quickly had, and the check valve has no stem or 'otherdelicate parts apt to be broken or bent from the hard usage or the temperature conditions to which the cock is exposed and hence can be'depended upon to perform its important function of automatically cutting 1 off the flow of steam and hot water from the boiler, when the valve, 16, must be removed.

lVhat I claim is:

1. A gauge cock having two valves, one being hand movable to its seat and the other being a check valve, the latter consisting of a solid block with a cylindrical portion and a conical end, a groove or grooves extending along the cylindrical portion and opening to the conical end, and a stem carried by the hand seated valve unconnected with but reaching to said check valve and adapted to engage the small end of the check valve, said stem being longitudinally adjustable to compensate for changes in the distances between the valve seats from grinding.

2. A gauge cock having a body and two valves, one valve being hand movable and the other being a check valve, the latter consisting of a solid block with a cylindrical portion and a conical end, a groove or grooves extending along the cylindrical portion and opening to the conical end, and a stem carried by the hand-seated valve unconnected with but reaching to said check valve, and adapted to engage the small end of the check valve, said stem being longitudinally adjustable to compensate for changes in the distances between the valve seats from grinding, the check valve situated in the passageway through said body, a bushing in the outer end of said passage to prevent the escape of the valve from the passage, and aspring between said bushing and the valve.

In testimony whereof I signature.

HENRY w. RYALLS.

hereunto aflix my 

